Related Experiment Video
Updated: Apr 16, 2026

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
Published on: June 28, 2018
Circularly polarized near-field optical mapping of spin-resolved quantum Hall chiral edge states
Syuhei Mamyouda1, Hironori Ito1, Yusuke Shibata1
1†Division of Physics, University of Tsukuba, Tennodai, Tsukuba 305-8571, Japan.
Abstract:
We have successfully developed a circularly polarized near-field scanning optical microscope (NSOM) that enables us to irradiate circularly polarized light with spatial resolution below the diffraction limit. As a demonstration, we perform real-space mapping of the quantum Hall chiral edge states near the edge of a Hall-bar structure by injecting spin polarized electrons optically at low temperature. The obtained real-space mappings show that spin-polarized electrons are injected optically to the two-dimensional electron layer. Our general method to locally inject spins using a circularly polarized NSOM should be broadly applicable to characterize a variety of nanomaterials and nanostructures.
Related Concept Videos
The Hall Effect
Atomic Nuclei: Nuclear Spin State Overview
π Electron Effects on Chemical Shift: Overview
NMR Spectroscopy: Spin–Spin Coupling
NMR Spectrometers: Resolution and Error Correction

